The rise and fall on the level of the

sea water in respect to the land

Follows a cycle that is linked

to the lunar day

This consists of 24 hrs. and 50 mins

The type of tide

is influenced by gravity.

As well as

the area...

As explained by

the video, there are

different types of

tides

Neap:

occuring when

Sun & Moon form

right angle.

Spring:

When the sun and moon are lined up.

having two high

and two low tides

in a cycle.

having only

one high & one

low tide per cycle.

involves two unequal

high tides & two unequal

low tides in a cycle.

tides have been

measured for many

years and its forms

have greatly developed.

By: Ailed Orozco

**GRAVITY**

force of attraction that keeps

us down!

Newton’s Grandest Discovery:

The Law of Universal Gravitation

Everything pulls on everything else...

Every body in the universe attracts every other body with a force that, for two bodies, is directly proportional to the product of their masses and inversely proportional to the square of the distance separating them:

More things to know about gravity....

The Inverse-Square Law = gravity gets

weaker with distance.

Inverse-Square

~1/d

2

What does the inverse-square law have to do with Earth and Gravity?

The greater the distance from the Earth’s center, the less the gravitational force on an object.

Gravity also causes Projectile Motion.

A projectile is any object projected by any means that continues in motion.

The path of a stone thrown off of a cliff results from two kinds of motion:

1. Straight down vertical motion

2. Horizontal motion of constant velocity

The curved path of a projectile with gravity is a parabola.

Gravity causes...

The same range can be obtained from different projection angles

These angles add up to a total of 90 degrees. For example 60 and 30 will have the same range.

The altitude will not be the same for these projection angles. For the smaller angle, the object will not be in the air as long.

Describe the speed of the cannonball

from at the following points:

1. a to b

2. b

3. b to c

a

b

c

What happens to a projectile when it is launched into space?

Satellites are any projectiles moving fast enough

to fall continuosly around the Earth.

In order to stay in orbit satellites must..

move at a speed great enough to keep them in orbit

this is known as tangential velocity, which also keeps the satellite moving in a circular path parallel to the earth's surface

***PUt it together!

How will the velocity of a

satellite be effected the closer

it is to earth?

The further it is from earth?